Driving mechanism for rolling-mills.



I. KENNEDY.

DRIVING MLGIIANISM IOR ROLLING MILLS.

APPLICATION FILI-3D 001222, 1913. 1, 1 2,2211l Patented Sept. 29, 1914.

2 SHEETS-SHEET 1.

J. KENNEDY.I

DRIVING MECHANISM FOR `ROLLING MILLS. APPLICATION HLED 001522.1913.

1, 1 1 2,220. Patented sept. 29, 1914.

2 SHEETS-SHEET 2.

WITNESSES INVENTOR yiwefmm/ Net, tm yp/@ZJ j @eeeeeweeemt referencebeing had to/the accomlmnyingv PATENT oEEIcE.

UNTTED sTATEs JULIAN KENNEDY, or rITTsEUEGH, PENNSYLVANIA.

vDRIVIN G MECHANSM FOR ROLLING-MILLS.

. rspecification off Letters Patent. Patented Sept, 291 1914;.

Application tied october 22, 1913. seriarlvo; 7963071 To allechomz'tmcg/ concern: l

.Be 1t known that I, JULIAN KENNEDL-a citlzenl of the United States,residlngat -littsburglnin the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement in Driving-Mechanism for Rolling-Mills, of Vwhich the -following is a full, clear,and .exact description,

drawings, forming part of this specification,

y in which- My invention relates to gear-driving mechanism for rollingmills, and is designed to reduce the number of spare parts kept instock, and to provide asimple andetiicient driving mechanism for therolls which will avoid torsion on the shaft of the driving pinion andallow interchanging of the driv ing gears one for the other.` Y jReferring to the accompanying drawings,

in which I have shown my inventionas ap' ,plied to a three-high mill,the numeral '2,

designates the top roll of the' mill,'3 the intermediate roll, and 4 thelower roll.v

5 and 6 designate .the drive shafts for the rolls 2 and4, respectively.These 'shaft's are journaled in parallel relation, one above another, inan auxiliary housing 7 which `is in endwise alinement with', but at adistance from the main housing 8. The two shafts 5l and 6 are connectedwlth the=respective rollsv 2 and 4 by means of the usual spindles V9 andl0.

' Rigidly secured toleach of the shafts and 6 is a gear wheel 11. Thesegears -11 ,are of relatively large diameter and are placed in adjacentvertical planes infoverlapping arrangement. The gears are helical orherringbone type. l I y 12 designates the driving` shaft upon which isformed, or to which vis secured a pinion portion which engages the teethof both the gear wheels. 11. The'pinion portion forms a double pinion,the partsl and n 14 thereof 'which lmesh with the respective j gearwheelsll being reversed with respect torvveach' other, vthe teeth `onthe two gear of the-doublewheels `11 be1,ng correspondin with relationto' each other. I also preferably Vprovlde eachof the shafts 5 and 6leach end, so that either shaft may be used reverslbly end for end -forthe purpose nowv to be described. It will be noted that' the two gears11 are of similar form, but that lthe reverse arrangement of theirteethis due to theffact that one of the gears is reversed side for sidewith respect -to the other. Therefore, either gear lmay beusedinterchangeably with the other by simply turning 1t around. Byalsomaking the shafts I5 an 6 reversible end for end, it Willbeapparent.

that a spare 'gear for each shaft may be thetop or the bottom, as may benecessary.

If the two pinion portions 13 and'14 were not reversed with respect toeach other, it would be necessary to carry a spare shaft with a wheelloose thereon and assemble and key them 'after it was determined inlwhich *position they were to be placed. By the gly' reversedconstruction shown, however, the4 gear wheel' can be placed on' a spare.Shaft, ready for carried in stock and can be used either at Ioperation,4 and this shaft and gearcan be used either at top or bottom.It will also beobserved that by the reversed arrangef ment of the teethof the two pinion portions tween the adjacent ends "of these twoportions. This adds considerably to the strength and also enables thetwo pinions, as well as the two vcloser together. This is ofadvantagesince it vreduces the strain on between the pinions. What Iclaim isz' mills, comprising a gearhousing, overla ping toothed wheels4secured upon sha tsn within said housing and adapted for driving lconnection to the rolls, vand a drivin shaft having a pinion gearmeshing w1th the toothed vwheels wit'hlnthe gear housing, said toothedWheels 'having rinclined teeth nef scribed.

2. A- gear-driving mechanism for rolling mills,'-comprising a gearhousing, overlappgn Ltoothed wheels rigidly secured to two -s a beingofthe herring bone type andwith the teeth reversed. directly each other,the

shafts lbeing interchangeable and adapted gears 11, to be placed- 1'. Agear-driving mechanism for rolling versed in direction, substantially ascle- 18 and 14 -no clearance groove is needed bethe driving shaftmounted in said housing, said Wheels for connection to the rolls ateither end, and

a pinion drive for said toothed Wheels, sub- .stantially as described.

3. A gear-driving mechanism for three- 5 high rolling mills, comprisinga gear housing'having overlapping toothed Wheels se.

ing shaft Within the housing having a pinion With two portions reversedin direct1on and engaging said toothed Wheels, substantially asdescribed. l5

In testimony whereof, I have hereunto set my hand.

JULIAN KENNEDY.

Witnesses J. W. KENNEDY, H. W. RANo.

Copies of this patent may be obtained for lve cents each, by addressingthe Commissioner of atent. Washington, D. C."

